Stars
More Stars
Stars, Stars, Stars*
The Sun
Galaxies and the Universe
100
Modern astronomy divides the night sky into _______ constellations
88
100
The Little Dipper is a part of the constellation _______________.
Ursa Minor
100
Hot stars are ______________________ (two colors)
blue and white
100
The average distance between the Sun and Earth is
93 million miles (about 150 million kilometers)
100
About how many Earth's can fit into the sun?
1.3 million Earths
200
The Big Dipper is a part of the constellation ___________
Ursa Major
200
A _________________ is the distance that light travels in one year.
light year
200
Relatively cool stars are _____________ (two colors)
red and orange
200
(Complete this statement ) There are more stars in the sky than all of the............
grains of sand in all the beaches in the world.
200
The Milky Way is a ___________ galaxy (what type)
spiral
300
Patterns of stars in the night sky are called __________________
constellations
300
Which of the following travels the fastest in the universe?
- A) A sound wave
- B) A speeding bullet
- C) Light
- D) A jet airplane
Light is the fastest thing in the universe. It travels at about 186,000 miles per second (or 300,000 kilometers per second).
300
What does the absolute magnitude of a star actually measure?
How bright a star truly is at a standard distance
300
how long does it take the sun rays to reach earth (in minutes)
an average of 8 minutes and 20 seconds
300
Earth and the solar system are in a galaxy called the ______________________.
Milky Way
400
_______________ is often called the North Star.
Polaris
400
The brightness of a star as seen from Earth is called its
apparent magnitude
400
The nearest star to Earth, other than the Sun, is __________ _______________.
Proxima Centauri
400
The Sun is unusual in one way. What way is that?
It is not close to any other stars.
400
Name two types of galaxies.
spiral, elliptical, and irregular
500
Name three constellations.
The Big Dipper, The Little Dipper, Ursa Major, Ursa Minor, Cassiopeia...
500
Stars are huge, glowing balls of very hot gas. They are mostly made of what two gases:
hydrogen and helium
500
Stars that are the same temperature as the Sun are ________________
yellow
500
A circumpolar constellation is
a group of stars that never sinks below the horizon and remains visible year-round from a specific latitude on Earth.
500
The ____________________________ states that the universe probably began about 13.7 billion years ago with an enormous explosion.
Big Bang Theory